<input type="text" (keyup)="onSearch()" [(ngModel)]="searchText">

<ng-container>
    已选择：<span *ngIf="objectData">{{objectData[searchCol]}}</span>
</ng-container>

<ul>
    <li *ngFor="let item of list"><span>{{item[searchCol]}}</span><button (click)="pickItem(item)">选择</button></li>
